Fix include guards.

BUG=angle:733

Change-Id: I08b2c11c4831f1161c178c1842b10e807185aced
Reviewed-on: https://chromium-review.googlesource.com/230831
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/compiler/translator/util.h b/src/compiler/translator/util.h
index fb53087..da71610 100644
--- a/src/compiler/translator/util.h
+++ b/src/compiler/translator/util.h
@@ -4,8 +4,8 @@
 // found in the LICENSE file.
 //
 
-#ifndef COMPILER_UTIL_H
-#define COMPILER_UTIL_H
+#ifndef COMPILER_TRANSLATOR_UTIL_H_
+#define COMPILER_TRANSLATOR_UTIL_H_
 
 #include <stack>
 
@@ -63,4 +63,4 @@
 
 }
 
-#endif // COMPILER_UTIL_H
+#endif // COMPILER_TRANSLATOR_UTIL_H_